I've had a nice win the past couple weeks, rolling out a new way to collect customer feedback: Voicemail.
My product is NanaGram, a service that helps you mail monthly printed photos to your grandparents by text or email.
My three biggest channels for customer feedback are automated reviews, user interviews, and through doing my own customer service (by email, phone, and text). But it's been tough getting feedback from a segment of my customers: photo recipients.
This seems like the kind of thing that could work for other products. Voicemail is nice because I don't have to be on-call 24/7. People dial in expecting to leave a voicemail. It's also been fun writing thank-you notes to the folks leaving me voicemail which creates a secondary stream of feedback and customer love.